sand

We’ve found the secret ingredient for using desert sand in construction: sawdust and a giant sandwich maker

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At a time when humans do not stop building and erecting large buildings, there is a problem that should concern us more and more: there is a lack of sand to make concrete. But here anyone can laugh, since we have great deserts on the planet where there is a huge amount of sand that we could use without any problem. But it’s not that easy. The problem. Today, traditional concrete is quite exquisite, since river sand is necessary to achieve a good result. And it has to be that way, because the desert sand is too round and fine to be able to “stick” well. But the truth is that we were running out of this sand so necessary to continue building. In Xataka The rain has transformed the driest desert on the planet into a sea of ​​flowers. It’s a sight to behold and a problem for experts We have a solution. The University of Tokyo and the University of Norway they have hit the key to turn the tables, and the solution is not only to use the desert sand that a priori we have left over, but rather it is to mix it with plant waste to create a material that has received the name Botanical Sandcrete. The recipe. The recently published study details a process that deviates from traditional cement setting, using a hot-pressing technique instead. And for this you only need two ingredients: Fine desert sand which, as we have said before, is useless for conventional concrete due to its morphology. Wood particles and plant additives that act as organic “glue.” All this, together with a temperature of 180 ºC and high pressure, means that the wood components help create a solid matrix that traps the grains of sand and transforms them into a handful of powder in a block that has great mechanical properties. {“videoId”:”x7znesx”,”autoplay”:false,”title”:”Self-consumption building THIS IS HOW THEY WORK – Solar panels in apartment blocks”, “tag”:”solar”, “duration”:”564″} What is it for? Here we should not be happy to find an alternative to a problem that we already had on our heads, since we are not going to be able to build skyscrapers with these tomorrow. Here the researchers point out that the material, as it is right now, is a non-structural alternative.  In this way, its use is mainly focused on pavements, urban tiles and enclosure blocks or outdoor furniture. Things that are ultimately not pillars for large buildings, but do allow us to save river sand. Your advantage. Having an alternative, although it cannot be used in everything, allows us to drastically reduce dependence on quarries and the transportation of river sand. An action that results in the destruction of river ecosystems around the world by removing a fundamental element. In addition to all this, using wood waste and plant additives means that it has a much smaller potential carbon footprint than concrete based on classic cement. In Xataka 30 years ago the US was the country that dominated rare earths. This graph shows how China devastated at dizzying speed Its importance. To date, most attempts to use desert sand involved expensive chemical treatments or mixing them in very low percentages with conventional sand. But the focus of these researchers involves the use of biomass, making us a perfect example of a circular economy. And if we see the full context of the situation, we are taking advantage of a resource that is very abundant but a priori useless like desert sand, along with a byproduct of the logging industry. But logically it still remains to be seen how it behaves over time and how well it endures adverse conditions. Although a priori we are facing great news. Images | Keith Hardy rawpixel.com In Xataka | A 29-year-old young man has invented a cement that makes magnetic walls: a solution to hang things without a drill or screws (function() { window._JS_MODULES = window._JS_MODULES || {}; var headElement = document.getElementsByTagName(‘head’)(0); if (_JS_MODULES.instagram) { var instagramScript = document.createElement(‘script’); instagramScript.src=”https://platform.instagram.com/en_US/embeds.js”; instagramScript.async = true; instagramScript.defer = true; headElement.appendChild(instagramScript); – The news We’ve found the secret ingredient for using desert sand in construction: sawdust and a giant sandwich maker was originally published in Xataka by José A. Lizana .

transforming desert sand into the cheapest and most durable road material in Africa

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Honda is experiencing one of its most complicated moments. On the one hand, it has canceled several launches of its electric cars in North America, has paralyzed the development of Afeela which it developed in collaboration with Sony and has announced losses of around $15.7 billion. Now they are in a moment of restructuring to get out of the slump, but they have not left aside some of their most experimental projects. One of them is PathAhead, a startup that emerged from its internal incubator that has presented a construction material made of desert sand with which it intends to pave roads in Africa. The problem they want to solve. Only about 20% of African roads are paved, according to data from Honda itself. This figure has a direct impact on the region’s economy, since in the end a place where transportation access is difficult makes logistics more expensive, limits access to markets and slows down development. Furthermore, according to the firm, conventional materials for road construction (natural sand and crushed stone) present variations in resistance depending on their geological origin, which makes it difficult to guarantee uniform quality. The solution: desert sand turned into arid. As we have mentioned before, the company behind this project is called PathAhead, and it has developed a material that it calls Rising Sand. The company describes it as the world’s first artificial aggregate made from desert sand. The process consists of agglomerating fine grains of sand (about 100 micrometers in diameter) into larger, more uniform particles using heat and pressure, increasing their resistance. Image: Nikkei Asia The result, according to the company, is roads with a useful life of more than 20 years, double that of those built with conventional materials, and a life cycle cost that is 60% lower, according to its estimates. The deployment plan. PathAhead plans to begin demonstration trials in Kenya in 2027, followed by Tanzania and South Africa. If the results are positive, mass production will begin in 2028 in its own factory in that country. The startup’s financial goal is to reach revenue of $270 million by 2034. The company has so far raised about 136 million yen (approximately $850,000), with Honda as one of its investors. Where PathAhead comes from. The startup was born within the Ignition program, which Honda launched in 2017 to encourage the creation of new businesses among its employees. Masayuki Iga, its founder and CEO, worked for years at Honda’s research center developing automotive materials. “I created PathAhead with the desire to apply the technologies and knowledge accumulated in that experience to directly address the challenges of our society,” declared Iga during the presentation in Tokyo. Why it draws attention now. Sling has increased its spending on R&D by 55% in the last five years, to exceed one trillion yen in the recently closed fiscal year. That the company maintains and even expands its commitment to internal innovation while undergoing a profound restructuring of its core business is, at the very least, a sign that it does not want to reduce its long-term bets. If PathAhead can prove that its material works on an industrial scale, it could become more than just an experimental project. We’ll see if it ends up having a place in the industry. Cover image | Sling In Xataka | The car industry has condemned the manual gear shift to extinction. A company wants to avoid it: BMW

Saudi Arabia and the United Arab Emirates import millions of tons of sand every year despite living on immense deserts

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The story is striking in itself: Saudi Arabia and the United Arab Emirates, two countries closely associated with the desert, import tons and tons of sand every year. So striking, in fact, that the first intuition is that it is false. But, as soon as you get closer to it, you discover that not only is it true, but it is more interesting than it seems. Because yes, these countries import a lot of sand. In 2023, only the United Arab Emirates bought more than six million tons. And it is surprising, of course, because these are two countries located on enormous deserts. The explanation, however, is simple: the sand they have is not suitable for certain things. At a technical level, what is known as “eolian sand” (that which the wind accumulates in dunes) is very fine, very uniform and very rounded. That makes it a poor sand for making glass, concrete or other industrial products. It is not that it cannot be used, but it requires adjusting the mixtures, controlling the granulometry and impurities (fines), and carefully balancing the manufacturing processes. That is to say, the process ends up becoming so expensive that it is cheaper to import sand that is more suitable for standardized processes. And this, ultimately, should not surprise us. Sand is, today, the second most exploited resource in the world (only after water). The United Nations Environment Program estimates that every year 50,000 million tons of sand and gravel are used. What’s more, the lack of sand is so obvious that there are criminal networks that traffic with her internationally. However, we are not talking about just any sand. There are, as is evident, many types of sand. For what is not interesting today we can distinguish natural sand (HS 250590) and siliceous/quartz sand (HS 250510). The Gulf countries import, above all, the second. Emirates, to give an example, is spent half a million a year in the first and 87 million in the second. That is to say, although they are countries ‘rich’ in sand, they do not have the sand they need. A sand, moreover, with very specific specifications (granulometry, purity, humidity, fines, contaminants, consistency of supply) and that are basic for glass, foundry, filtration or the chemical industry. However, they also import natural sand. And this is interesting because, as they point out in the UNthis only makes clear the significance of the problem of governance and externalities. Despite having usable sand, in many cases it is preferred to buy from other countries (such as Oman) to avoid the negative externalities of draining sand from their coasts and deserts. Something that can alter livelihoods (fishing, agriculture due to salinization, coastal tourism) and increase vulnerability to storms. In the summer of 2019, the couple who became famous was arrested in Sardinia for hiding 40 kilos of sand in his trunk. That was the anecdote, the problem was another: that beyond mass tourism, the tensions on the sand are increasingly greater. It is something that has only grown and is normal. The world is not here to do without one of its most valuable resources. Image | Lars Portjanow In Xataka | We are running out of sand. And there are already traffickers who negotiate with it in India or Morocco

China has been dumping tons of sand into the ocean for 12 years. And now we are seeing islands emerging in the middle of nowhere

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It has been more than a decade since China began a striking strategy of territorial expansion: throwing tons of sand into the South China Sea. This is not unique to China and, in fact, Japan thus built an airport that soon it will be an underwater airportbut China is doing it massively and with one objective: to claim what is its own. And seeing how they raise these artificial islands is… hypnotic. Context. The end of 2013 marked a turning point in China: the country started to massively fill in seven of the reefs of the Nansha and Xisha archipelagos (Spratly and Paracels, respectively). In record time between December of that year and June 2015, China carried out the first phase of the operation: the filling phase. From 2015 onwards, they have dedicated themselves to consolidate that territory through the construction of infrastructure such as landing strips, hangars, ports, radars and support structures. According to the US-China Economic and Security Review Commission, between December 2015 and October 2015, China had built artificially about 12 km² of land on the Nansha reefs. While the United States said it with concern, the Chinese media confirmed the information with pride. Before and then How they do it. They did not use overly complex methods to do so. On the one hand, they cut the coral bottom and pumped sediments to shallow areas. The earth was deposited as fill to later build dikes and retaining walls around the reef. The next step was to deposit more fill and, finally, large steamrollers and shovels were compacting that earth to give consistency to the whole. The last thing was to create paving, landing strips, roads and other infrastructure. The result is more than 12 km², and put in context they represent “17 times more land claimed in 20 months than all the other international claimants have achieved during the last 40 years.” In action. Seeing the satellite photos that show the before and after, something easy to do using the history function of Google Earth, is interesting, but seeing a timelapse of how one of these new territories has been built is, as I said, something hypnotic. An example, the following video ‘tweet‘ (if you can’t see it, click on it): Narrative. What motivation does China have for such a deployment of resources and money? It depends who you ask. On the one hand, the Chinese government has defended that the creation of these islands serves the support in rescue missions on the high seasalso to fishing, scientific research, navigation support points thanks to these radars and the collection of data for its meteorological service. Finally, it also serves for defense if necessary. The neighbors are not convinced by the explanation and, in fact, think that it is a strategy that responds to a single interest: claiming territories that China considers its property. The Ministry of Defense of Japan assures that these infrastructures allow a permanent Chinese presence in waters that do not belong to it, with offensive capacity in practically the entire South China Sea. Military. Recent reports, such as the one from CSIS in 2025, underlines that China’s recent near-perennial activity in the South China Sea has only been possible thanks to that decade-old construction work. Western analyzes they point that the runways for aircraft are prepared for combat aircraft and land transport, as well as the presence of ports for warships, underground facilities and even missile platforms. The tension is evident because Beijing claims sovereignty over territories that its neighbors deny. Those neighbors are Vietnam, Taiwan, Japan or the Philippines. And Vietnam, in fact, is doing the same thing as China in 2013: throwing land into the sea. Their progress has also been considerable in a short time in an area that has become a real hotbed. The ecological impact. But beyond the intentions of each other, something undeniable that cannot be hidden under any narrative is the environmental damage that these artificial islands cause to their surroundings. In some articles it has been indicated that this ‘island’ desire has caused the loss of some 12 to 18 km² of reef, damaging some of the best preserved reefs in the region directly, but also affecting distant systems due to the ‘clouds’ of sediment formed during the dumping of sediments. Chinese scientific articles have also shown that these practices eliminate completely the ecosystem of the occupied area and negatively affects currents and sediment patterns, causing the aforementioned degradation of neighboring areas. However, the State Oceanic Administration of China defend that all projects were thoroughly evaluated and do not harm corals. The fault of it? Global trends such as sea acidification or climate change. Images | Ma Wukong In Xataka | China is building something that looks like an oil well. It is actually a nuclear bunker with a command center

In Madrid there are 24 tons of Canarian volcanic sand giving tumbos. So they will become a “dry garden”

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Every summer has its informative soap opera. That is no novelty. What is less common is that, As is happening In La Palma, a few sacks of sand star. It sounds strange, but after all it is the history of the 24 tons of volcanic sand that in May 1,800 kilometers traveled to value the Canarian culture and then ended up abandoned. From the case we already talk to you A few weeks ago. Now we finally know its conclusion, which is no less surprising. Volcanic sand … and traveling. A few months ago, in May, the Canary Authorities had a peculiar idea: they collected more than 20 tons of sand from Tajogaite volcano (La Palma), prepared it and put it in large bags and then uploaded it aboard a ship that transferred it to Cádiz, from where she traveled again on board trucks to Madrid. It took several days to cover the entire journey. Once in the capital they opened the sacks and scattered those blackish grains in the middle of Callao, drawing a huge, dark and bright circle. And all that, for what? To value the Canarian struggle, a popular sport on the islands, but that many do not know in the Peninsula. Coinciding with the Month of the Canary Islands, on May 17 the outdoor playing field was prepared in the Plaza de Callao and everything arranged so that two of the teams with the most footprint in the islands, the Saladar of Jandía and the Candelaria de Mirca, dispute in Madrid one of the most emblematic days of the DISA Government of the Canary Islands. As was in charge of emphasizing The regional government was the first time in the very extensive history of the island sport in which an official fighting day was held in the center of Madrid. But even so, to give it more epic, they decided that the fighters were measured on authentic volcanic land of La Palma. Hence the whole logistics deployment of sacks, permits, ship, trucks and crane. First stop: Callao Square. The experience was a success. In addition to the Arena, in Callao, stands were installed and the appointment attracted a nourished audience that included some authorities, such as the island president, Fernando Clavijo. “Fighting about the sand with which so many palm trees continue to fight to get ahead was a spectacular moment. We were recorded in memory,” Recognize in The Spanish newspaper (EPE) Lorena Hernández, general director of native sports of the regional government. At first, the sand, he remembers, sounded like “crazy”, but the idea went ahead for his “romanticism.” And what do I do with all this sand? That was the next question. Once the competition is over and the experience is over the next question was what to do with those 24 tons (some versions speak of 20) expelled in their day by the Tajogaipe volcano. They could take the way back to the palm. Or they could stay in Madrid as a gift, which was the idea that ended up. There were those who thought that the grains would be divinely in the Madrid volleyball pigs and for that purpose they reserved, but there was a problem: the sand was heated too much, so it was not a good idea to dedicate it to that end. Second stop: Torrelodones. The history of those volcanic sands ended A report With a suggestive headline: “Without a trace of the 24 tons of sand from the palm volcano that Canary Islands gave to Madrid for beach volleyball fields.” The newspaper said that the Consistory had no evidence that they went to dedicate volleyball sand to its volleyball fields. Apparently the material was lost track. The mystery did not last little. A day later the same medium revealed That the sand of discord was actually in a Torrelodones warehouse, where they accumulated dust waiting for the City Council to ultimately accept the sacks formally and look for a new use. Discarded the Volleyball fields and without short -term plans that the Canarian struggle was to take root in Madrid, then it was pointed out to be given a third use: environmental. Third stop: “Dry Garden”. The story seemed to conclude there, but EPE He has just contributed A new fact that (at least apparently) puts the end to the soap opera of volcanic sand, at least for the moment: instead of allocating sports clues, the sand will be dedicated to gardens. And not any kind. There is talk of “dry gardens.” One of the ideas on the table is to create a garden with low water consumption species and a typology similar to those that exist in the Canary Islands. Another option is to use it in other green spaces to take advantage of the properties of the material, of porous structure, good for drainage and that prevents the land from flooding. “It is a high material in minerals, in the Canary Islands it has worked wonderfully. If the sand can have a second use and create a green space with the sand of the palm, it will be wonderful,” Recognize Hernández. Why does it take so long? Simple: bureaucracy. The Cabildo had already prepared a document with the details of the donation, but now it is time to modify it: instead of allocating the sand to sports uses, it will be dedicated to the parks and gardens of Madrid. “Being a donation between public institutions, it requires a lot of paperwork. With this, we believe that we can put an end to management in one or two weeks,” they explain to EPE after specifying that a few days ago new documentation was requested. While the procedures advance in the offices, in the Torrelodones ship follows the one that is probably the most traveling sand in the history of the palm. Images | The Government of the Canary Islands (X) In Xataka | The Canary Islands have seven islands, but only one has escaped from the … Read more

The Canary Islands gave 24 tons of sand from La Palma volcano to Madrid. Now Madrid doesn’t know what to do with them

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Madrid has 24 tons of volcanic sand of the palm with which he does not know very well what to do. It sounds strange, but that is the peculiar outcome with which the consular and capital governments have been found after an initiative designed to value the Canarian cultural heritage in the Peninsula. The idea worked, but has ended up leaving that peculiar inheritance: bags and more bags of dark ash that accumulate dust (and controversy) without a clear destination. We explain ourselves. Presuming culture. May 17 was a day to frame in the history of Canarian culture. Or at least in one of its most popular disciplines: The Canarian fighta sport that hurts its roots in the first settlers of the islands. His practice is very popular in the archipelago, but not so much out. Hence, on May 17, as part of the Month of the Canary Islandsthe Government promoted A milestone In the discipline: the first day of official Canarian struggle in Madrid. FIGHTERS AND MUCH (MUCH) ARENA. For the appointment, fighters of the Saladar de Jandía and the Candelaria de Mircatwo key teams of the discipline that were measured in the twentieth day of the DISA Tournament of the Canary Islands. And something else: tons of volcanic sand transported from the palm to cover the pitch. The idea was to give even more epic to the appointment carrying a piece of the Canary Islands (literally) to Madrid and deploying it in the middle of Callao, where the Canarian fighters were measured. A 24 tons “ring”. The idea worked. The photos Shared by the Canarian government (with volcanic sand covering callus) they are fascinating and also show that the appointment attracted a good handful of curious. To host them, even a portable stand with capacity for 200 spectators. The event was also attended by President Fernando Clavijo along with regional positions and representatives of the institutional, sports and social life of the archipelago. In case that was not enough, the Executive took care of the last detail. Any type of volcanic sand was not transported to Madrid. No. The authorities chose ashes from the island of La Palma that were generated during the Tajogaite eruption In 2021. “The youngest of the islands, chosen as a symbol of identity, roots and renewal,” the Canarian government insisted in its community. In total some mobilized some 24 tonsaccording to the institution itself. And what happened to that sand? The fight was held on May 17, Jandía’s Salader won the Candelaria de Mirca in a fierce encounter (12-10), but … and then? What happened to tons of volcanic sand? That is the question that was asked recently eldiario.es, which after consulting with the Madrid City Council reached an amazing conclusion: the bags seemed to have vanished. “Without a trace of the 24 tons”, He titled The newspaper. The news was even more striking because, as confirmed by the regional government, the agreement contemplated that, after the May fight, the 24,000 kilos of ash were ceded to the Madrid City Council so that it could cover with it the fields of beach volleyball. From the Consistory they assured however not to have proof of that initiative. I wasn’t dead … It was not the last chapter of the curious soap opera of the traveling volcanic sand. On Saturday Eldiario.es published again Another revelation About the 24 tons of Tajogaite: the material was not lost by Madrid, but stored in work bags in a Torrelodones industrial ship. The reason? Although the initial idea was to allocate the sand to Madrid Volleyball courts, the authorities of the capital came to the conclusion that it was not a good idea to give it that use. His grains may serve for a Canarian fighting fight, but in the opinion of Madrid technicians they tend to heat up easily, which led the authorities to rule it out for the courts. And what will it be used for? It doesn’t seem to be very clear. At least according to the information handled by eldiario.es, which ensures that the Department of the Environment is looking for an adequate destination for the Canarian gift. The bags are also waiting for the Consistory Ultime for a collaboration agreement to accept the material, which, a priori, will have environmental use. In the authorization of the Cabildo it is noted that the material “lacks commercial value”, although as He put value The Canarian government does have a symbolic value. Images | The Government of the Canary Islands (X) and Canary Islands In Xataka | The Canary Islands have seven islands, but only one has escaped from the hordes of tourists: its secret is literally on earth

A tower of 2,000 tons of sand

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In a town in southern Finland, a gigantic silo stuffed with powdered rock keeps an unexpected promise: clean, cheap and stored heat for months. The world’s largest sand battery has been put into operation, which began as an idea of ​​two friends in 2018 today It has become In a pioneer installation that seeks to solve one of the greatest challenges of renewable energies: its large -scale storage. A sand battery. In a place where the sun does not always shine and the wind does not always blow, the storage for renewable energies becomes prevailing. The thermal battery of Polar Night Energy, built next to the Urban Heating Plant of Pornainen and managed by Loviisan Lämpö, ​​officially launched on June 11, According to Euronews. This battery has a thermal storage capacity of 100 MWh, with an efficiency that is around 85 and 90%. Ten times bigger. The new cylindrical structure has a height of 13 meters high and 15 wide, filled with about 2000 metric tons of crushed steatite – a byproduct of the manufacture of Finnish chimneys. That powdered rock, stored in an isolated silo, becomes a gigantic thermal energy accumulator, capable of supplying the demand for heating of one week in winter or a month in summer, According to TechCrunch. How can it be of sand? Although it may seem sophisticated, the principle is relatively simple. Electricity is used – preferably of solar or wind origin – to resistively heat the air, which in turn transfers heat to the sand into the silo. The sand, due to its high density and heat capacity, retains that heat for days or even months at temperatures up to 500 ° C. So, when needed, the system releases hot air, which heats water for the urban heating network. In the case of Pornainen, he supplies thermal energy to public buildings, homes and even the municipal pool, such as has pointed out Euronews. All control and prediction of energy performance is managed by an advanced heat transfer model, which calculates optimal load and discharge in real time. To reduce the use of splinters. With this new structure we want to reduce the use of splinters in urban heating by 60% and eliminate up to 160 tons of CO2 per year. In addition, it could be added that construction sand is not being used, but a stoatita recycled a local by -product. Polar Night Energy co -founder Markku Ylönen, has explained in Euronews that the material used must fulfill certain thermodynamic criteria, but it is not necessary to be sand as such. Any high density granular substance can work. This opens the door to circular economy models and avoids pressure on river ecosystems. Connected to the electricity market. The battery is within the energy reserve service, and from the company they continue working on a pilot to convert the heat stored in electricity, which could further transform the energy flexibility of the system. In addition, he counts with an estimated storage cost much lower than that of lithium batteries, According to TechCrunch. A new paradigm change. In times of climate crisis, perhaps the future of energy does not depend only on lithium, hydrogen or large solar parks, but also for forgotten materials such as sand. From the heart of Finland, a silent battery already heats houses, libraries and schools. Image | Taro Kam and Pxhere Xataka | While Europe desperately seeks alternative to Russian gas, a Spanish province has already found it: Burgos

Some geologists studied the sand of one of the beaches of day D in Normandy. They discovered that 4% is still shrapnel

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More than 80 years have passed from “Day D” And yet his memory is still very present on the beaches of Normandy. And not in an ethereal and symbolic way. No. Beyond memory, the landing of allied troops in the French region in June 1944 maintains a palpable footprint in its sand. One that can be touched and seen, although for the latter an electronic microscope is needed. This was checked by a group of geologists who collected a sand sample on the beach of Omaha. When taking her to her laboratory and studying it in detail, they bought, amazed, that 4% were actually remains of shrapnel. A microscopic memory of a historical date. Normandy walk. That is what they did a good day of 1988, the Geology professor Earle McBridefrom the University of Texas in Austin, and its colleague Dane Picard, of the University of Utah. While doing a field study in France decided to take a break and visit the famous Omaha beachone of the main landing points of the day D in Normandy. They did not have much luck with their Norman trip. The day they walked through the sand, around eight kilometers long, it was disappeared, cold and windy; But that did not prevent McBride and Picard to take home a memory that honored his formation: a small sand sample. Some time later they decided to rescue the bag with those grains of Normandy and observe them under the microscope. And the surprise came. What McBride found in that sample of sand collected in Omaha Beach caught his attention. In addition to quartz remains and other materials that it already gave, the geologist observed tiny Metal fragments. When studying them in detail with the microscope he found that they had a rounded shape, they were rough, laminated and an opaque brightness, with some oxide points. Some pieces were around the millimeter. Others did not go from 0.06 mm. The remains of the battle. Thus, reduced to millimetric metal accounts eroded by waves and the passage of time, perhaps they were difficult to identify, but McBride ended up reaching a fascinating conclusion. What I had before them were vestiges of Normandy landing. “They turned out to be a shrapnel of the invasion of World War II. After a more detained exam, he also saw iron and glass accounts that had resulted from the intense heat unleashed by the explosions in the air and the sand,” They detail From the University of Texas in Austin. So curious was his finding that, together with PicardProfessor McBride decided to prepare An article and publish it in the magazine The sedimentary record. Foreseeable. “Of course it is not surprising that the sand of the beach of Omaha be added at the time of battle, but it is that it has survived more than 40 years and without a doubt it is still there today,” They commented Both experts. His sample was from the end of the 80s and The report They published it in 2011; But everything indicates that the situation remains the same today. In 2011 experts They calculated that corrosion would still take a century to destroy shrapnel grains. A well mesurable footprint. If McBride and Picard’s study is surprising, it is because it has done more than verifying that – discussion after day D – through the Normandy beaches, remains of shrapnel are still distributed. So or more curious is that experts have managed to contribute a fairly precise idea what this footprint represents in the sand. After examining the exhibition in detail, the Texas geologist found that metals represent 4% of the sand. The data is illustrative, although McBride and Picard slide that there could be variations depending on where and when the sand is collected. “Due to the possible plasticization of shrapnel and heavy minerals by the waves and currents the day we collected our sample, we do not know to what extent it is representative of the sand of the beach as a whole.” The Omaha was one of the great landing points of day D, but there were other beaches in Normandy to which the allies arrived in the Neptune operationknown as Utah, Sword, Gold and Juno. Date of expiration. Although the accounts discovered by American geologists are a peculiar memory of the day and have survived decades, McBride and Picard have already noticed years ago that they will not last forever. The remains of shrapnel could resist erosion for millennity, but when the grains study the geologists discovered oxide particles, which leads them to be pessimistic about their future. “The waves stir the iron fragments, which in turn eliminates part of the oxide and exposes fresh material, more prone to oxidation, which in turn follows, and so on,” Point out The University of Texas. “The result is that they will become smaller and in the end the storms or hurries will drag them and take out of the beach,” McBride reflected in 2011. His calculations pointed out that 4% of shrapnel identified in Omaha Beach would be reduced to insignificance in a century. They will remain to remember the allied landing, yes, monuments and memory. Image | Person-With-No Name (Flickr) In Xataka | The US landed on an empty island during World War II. In nine days it had more than 300 casualties *An earlier version of this article was published in June 2024

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